Both players, who excelled as running backs, project as defensive backs in college.
Collins, a 6-foot, 175-pound senior who is also a top student, was one of South Jersey's most coveted college prospects. He made official visits to Duke and Wake Forest and canceled a scheduled visit to Northwestern.
``I really wanted to wait [the decision] out to the last minute,'' said Collins, who had 54 tackles and five interceptions last season. ``But it gets to be a pain after a while.''
Tech's recent success was a factor in Collins' decision.
The Yellow Jackets will make their second consecutive bowl appearance when they play Notre Dame in the Gator Bowl on New Year's Day. Wake Forest hasn't played in a bowl game since 1992.
``They're winning right now, and I think they're only going to get better,'' said Collins, who had 1,020 yards and 26 touchdowns as a running back/return specialist.
Collins, who carries a 3.5 grade point average and has scored 1,120 on the Scholastic Assessment Test, plans to major in biology. He said he hopes to make Tech's traveling team as a freshman, though he would prefer to redshirt if he doesn't see significant playing time. Collins likely will start his career as a cornerback.
Gray rushed for 1,157 yards and scored 15 touchdowns while playing almost exclusively on offense this season, but the Panthers are hoping the 5-10 180-pounder can bolster their defensive backfield.
Gray, who will likely play safety in college, had drawn serious interest from Miami and Clemson, though both wanted him to wait until January to make a decision.
He was supposed to visit Temple on Sunday, but when he tried to reschedule the visit for Monday, Heck said, the Owls coaches wanted to move it to January when school was back in session.
Gray, however, didn't want to wait any longer.